External venetian blind



J. E. BUSH EXTERNAL VENETIAN BLIND' Filed Feb. 4, 1949 Aug. 14, 1951 Patented Aug. 14, 1951 UNIIITED ;.S TATES Oi-FFiI-CE "EXTERNAL VENETIAN'BLI ND Jesse E. Bush, Dallas' Texe .Applicatiorrl february' 4, 1949,..Serial No.:. 74,583

ousies for use on windows, doorsaand'iotlrer' open:-

ings of buildings;

One object of the invention. is to provide an improved jalousie having adjustable coacting'louversof. such construction'thatwhen closed the passage of wind, rain or other;moisturetherebetween is substantially prevented.

.Another object ofthe invention: is to'jprovide an improved jalou'si'e, of the character described, having improved means carried by one longitudinal edge portion of each louver for coacting with the adjacent louver to trap any wind, rain or other moisture that is blown or otherwise passes between said louvers.

A further object of the invention is to provide an improved jalousie, of the character described, wherein an inverted trough is formed at the upper longitudinal edge portion of each louver for overlapping and coacting with the lower longitudinal edge portion of the adjacent louver so as to trap and direct downwardly and outwardly any wind, rain or other moisture that passes between said louvers when closed or partly open.

Still another object of the invention is to provide an improved jalousie, of the character described, wherein the inverted troughs of the louvers are formed by rolling the upper longitudinal edge portions of the said louvers forwardly and downwardly upon themselves.

A construction designed to carry out the invention will be hereinafter described together .with other features of the invention.

The invention will be more readily understood from a reading of the following specification and by reference to the accompanying drawing, wherein an example of the invention is shown, and wherein:

Fig. 1 is a perspective view of a jalousie constructed in accordance with the invention,

Fig. 2 is a vertical, sectional view of a portion of the jalousie, showing the relation of its louvers when closed,

Fig. 3 is a view, similar to Fig. 2, showing jalousie louvers open, and,

Fig. 4 is a horizontal, cross-sectional view, taken on the line 4--4 of Figure 3.

In the drawing, the numeral I designates an external Venetian blind or jalousie having a rectangular frame H of sheet metal which includes upright side members or stiles I2 and upper and lower members or rails [3. The frame ll substantially conforms in size to the opening of a conventional window frame l4 and has an in- 2 Claims. (CI. 2062) wardly-directed base flange l5made integral with each of itsframe members 'I2--and l3ffor'" having sheet metal body" portionsfil andlaterally or rearwardly directed'wings' or'ffianges 22'; are pivotally supported by the frame II in overlapping relation. The louvers 20 are disposed between the outer portions l8 of the stiles and have their wings Z2 pivotally attached to said stile outer portions in parallel relation by rivets 23 or other suitable means. It is preferable to position the rivets 23 adjacent the forward edge portions of the louver Wings and substantially midway between the longitudinal edge portions of the louvers, A rivet 24 connects the actuating link i l to the upper, rear portion of each louver wing, it being noted that a single link on one side of the frame is ordinarily suflicient for operating the louvers. When the louvers are closed, the forward edge portions of their wings overlap and inset pockets or recesses 25 are formed in the upper edge portion of each wing to accommodate such overlap (Fig. 2). In this manner, the louver wings fit snugly against the stile portions IS.

The body portions 2! of the louvers are crowned or curved transversely to an extent sufficient to increase their rigidity and have their convex surfaces exposed or directed forwardly. Each body portion has its lower longitudinal edge rolled rearwardly and upwardly upon itself to provide a marginal lip or bead 26 which is substantially circular in cross-section (Fig. 2). When the louvers are closed, the marginal beads 26 overlie or overlap the upper longitudinal edge portions of the adjacent lower louvers and hear thereagainst for sealing off between said louvers. The upper edge portions of the louvers extend above these marginal beads and are curved forwardly and downwardly upon themselves so as to provide inverted, semi-cylindrical troughs or traps 21 which overlie and terminate immediately above said beads, being spaced from the beads and their louvers. A suitable inclined flange 28 overlies and coacts with the upper edge portion of the uppermost louver, while the lower edge of the lowermost louver coacts with a similar underlying fiange 29.

Manifestly, substantially all wind, rain and other moisture is prevented from being blown or passing between the closed louvers by the overlapping engagement of the beads 26 with the upper edge portions of the adjacent louvers. Any wind, rain or moisture that enters between the longitudinal edge portions of the louvers is trapped by the troughs 21 and is directed downwardly and outwardly and excess moisture flows to and esc'a'pes'at the ends of said louvers. Even when the louvers are partly opened, the troughs function to deflect wind, rain or moisture downwardly to impede, if not prevent, the passage thereof between the louvers. By spacing the troughs from the adjacent beads and their louvers, the necessity for close tolerances is elimi-, nated and there is no danger of marring or otherwise damaging the finish of the edge portions of said louvers.

The foregoing description of the invention is explanatorythereof and various changes in the size, shape and materials, as well as in the details of the illustrated construction may be made, within the scope of the appended claims, without departing from the spirit of the invention.

What I claim and desire to secure by Letters Patent is:

. 1. A jalousie including, a frame, a plurality of adjustable louvers extending across and pivotally supported by the frame, the louvers having overlapping longitudinal edge portions with the lower edge portions overlying and engaging the upper edge portions when said louvers are closed, and inverted troughs formed on said upper edge portions above said lower edge portions and closely spaced thereto to trap and prevent the passage of wind, rain and other moisture between said louvers, and troughs on the lower edges of the louvers directed inwardly and underlying the inverted troughs on the upper edges of the next below louvers when the louvers are closed.

2. A 'jalousie as set forth in claim 1 wherein the troughs on the lower edges of the louvers include portions directed inwardly toward the outer face of the next below louver, and lips on said inwardly-directed portions directed toward the upper edges of the louvers, the upper extremity of each lip extending inwardly toward the inner faceof the louver carrying that lip'whereby the lower edge troughs are partially enclosed.

JESSE E. BUSH.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

